Lock for sectional glass-molds.



m. 553,!40. Patented July 3;, new.

E. S.'HART.

LUCK FOR SECTIONAL GLASS MULDS.

(Application filed Aug. 12, 1899.)

(No model.)

1 to which it appertains to make and use the 1 5o ticularly pointed out in the su bjoined claims.

NITED STATES EDWARD s. HART, OF DUNKIRK, INDIANA, ASSIGNOR or TlIREE-FOURTHS TOMATTHEW H, HART AND CHARLES BIRCH, ea, or SAME PLACE, nun TuoMAsF. HART, or MUNOIE, morass.

LooK FOR seoriosntetnss rwotos.'

SPECIFICATION forming part of Letters Patent No. 653,140, dated July 3, 1909.

Application filed August 12, 1899.

To all whom it may concern: Be it known that I, EDWARD S HART, a citi zen of the United States,residing at Dunkirk, in the county ofJay and State of Indiana, have 5 invented certain new and useful Improvements in Looks for "Sectional Glass-Molds; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention has particular reference to improvements in that'type of locks for settional molds used in the manufacture of glassware in which the two sections of the molds are locked by an axiallymovable bolt carried by one section and having a beveled head which passes through an opening in the other section while the mold is being opened and closed and when the mold is closed is turned to bring its beveled portion into engagement 2 5 with a correspondinglybeveled portion of said other section, thus locking the two sections together.

The objects of the invention are to increase the rapidity and efiiciency with which the two sections are locked when they have been brought into relative positions to be locked and to accomplish this very important result by simple, inexpensive, and durable means.

To this end the invention consists in alock- 3 5 ing-bolt carried by one section and having a beveled head to engage a correspondinglybeveled part of the other section and characterized by the fact that it simultaneously moves bothaxially and longitudinally in its bearing, thus subjecting the mold-sections toa double closing action simultaneously pro duced and resulting in a most rapid and efficient locking of the sections together; and the invention further consists in the details of construction by which the locking-bolt is caused simultaneously to move both axially and longitudinally in its bearing to effect said rapid and efticient locking of the sections together, substantially as described, and par in said opening.

Serial No. 726,973, (No model In the accompanying drawings, illustrating the invention, Figure 1 is a plan view of a sectional mold provided with my improved locking means therefor, the sections being shown as locked together. Fig, 2 is a similar view showing the sections fully open. Fig. 3 is a front view, partly in section, with the mold closed, but not locked; and Fig. 4 is a detail perspective view of the locking-bolt.

The same numerals of reference designate the same parts in the several figures.

1 and'2 designate the two sections of a mold, having arms 3 and 4 extending rearward therefrom and hinged together at their rear ends 5 and also having projections or plat'es' fi'a'fid 7, which latter are formed to constitute parts of the locking means for the sections. The projection 6 has an opening or open-ended slot 9, formedto permit the head 11 of a locking bolt or rod 10 to pass freely through it while the two sections of the mold are being moved to and from each other. Said locking-bolt is carried by the projection 7 and is mounted in antopening 12, formed in said projection, in such manner as to permit it to have both axial and longitudinal movement One face of the projection 6 is beveled, as shown at 13 in Fig. 3, and one face of the bolt-head 11. is correspondingly beveled, as shown at 14, so that during the axial movement of the bolt in its bearing the two sections of the mold will be wedged together into a close engagement each with the other, in which action of closing the sections together the bolt is materially assisted by its longitudinal movement in its bearing. When thus closed, the parts are locked eficiently against accidental movement by friction, as will be seen.

In order that the action of wedging or lookin g the sections together may be accomplished with maximum rapidity, it is necessary that the axial and longitudinal movements of the bolt in its bearingbesimultaneous. The best means for attaining this desirable end con- 95 sist of threads 15, formed on the end of the bolt 10 and engagedflwith a nut 16, fixed in an opening 17, formed in the projection 7.. It will be evident that the threads which are to be engaged by the threaded end of the bolt roe 2 states may be formed directly in the projection 7 but it is preferred to form them in a nut, as described, as it is deemed desirable that the engaging threaded surfaces be of hardened steel, so as best to resist wear. The bearingsurfaces 13 and 14 of the projection 6 and head 11 also are preferably formed of hardened steel.

Mold-section 1 is provided with a handle 18, fixed to it in any suitable manner, and a handle 19 is also provided for the mold-section 2. These handles are grasped by the operator for closing and opening the mold, and the handle 19 is further used for adjusting the locking-bolt in its bearing. It is therefore attached to the end of said bolt, as shown. It has a rearward projection 20, which is designed to engage a pin or other suitable stop or guide 21, which extends laterally from-the mold-section 2. The location of the pin 21 is such that when the projection 20 is engaged with it the head 11 of the bolt 10 will be held in position to pass freely through the opening 9 in the projection 6, so as to not interfere with the opening and closing of the mold.

From the above description of the construction of my invention the operation thereof will readily be understood to be as follows: Assuming that the mold is open, as shown in Fig. 2, and that the operator desires to close and lock it, he grasps the handles 18 and 19 in his two hands and moves the sections toward eachother and into the position shown in Fig. 3, the head 11 of the bolt being held in position to pass freely through the opening in the projection 6 during this movement by the engagement of projection 20 with pin 21. the handle 19 is given an upward turn, which causes the inclined surface 14 of the bolt to engage the inclined surface 13 of theprojection 6, and thus draw the two parts of the mold closer together, and at the same time the bolt 10 will by virtue of its threaded connection move longitudinally in its bearing, and thus further draw and lock the mold-sections together. As the actions of the inclined sur-' faces and threads are simultaneous, the two parts of the mold will be very quickly closed When the parts have been thus c1osed,,

together and securely locked. It will be apparent that the mold-sections are unlocked and the mold opened by a reversal of the movements above specified.

Having thus described the invention, what I believe to be new and desire to secure by Letters Patent, and what I therefore claim, 1S

1. The combination with the two sections of a glass-mold, each of said sections having a projection and one of said projections having an opening and a beveled outer surface, of an axially-movable locking-bolt carried by the other section and having a beveled head to engage said beveled surface, means for causing said'head to pass freely through said opening while the mold is being opened and closed, and means by which the axial movement of the bolt also causes it simultaneously to move longitudinally in its bearing, substantially as described, whereby the locking of the sections is effected by two movements simultaneously produced, for the purposes specified.

2. The combination with the two sections of a glass-mold, each of said sections having a projection and one of said projections having an opening and a beveled outer surface, and the other of said projections having a threaded bearing, of a locking-bolt having a threaded portion to engage said'bearing, a beveled head attached to one endof said bolt, to engage the beveled surface of the other projection, a lever attached to "the other end of said bolt and extending beyondthe same,

'and a stop to engage the extended end of the EDWARD S. HART.

Witnesses:

FRANK DENNIS, D. W. MoKINLEY. 

